The Chinese Guowang constellation with satellites at 1100 km could be a problem if anything fails or collides.
The big spike labeled FY-1C is from a Chinese ASAT operation.
20
JoeBigelow @lemmy.ca - 1mon
I feel like the country letting Musk blast space full of shit might also want to have a look
15
GreatTitEnthusiast - 1mon
My understanding is starlink won't contribute to the kessler syndrome because they are in low Earth orbit. They routinely fall back down to Earth so they don't contribute to much space junk
There are other potential issues with that, though. Just not space junk
29
tal @lemmy.today - 1mon
And it's not like they couldn't have done the anti-satellite test on something that was about to re-enter. India did that a while back.
In a statement released after the test, Indian Ministry of External Affairs said that the test was conducted at low altitude to ensure that the resulting debris would "decay and fall back onto the Earth within weeks".[39][22]
According to Jonathan McDowell, an astrophysicist at Center for Astrophysics | Harvard & Smithsonian, some debris might persist for a year, but most should burn up in the atmosphere within several weeks.[40] Brian Weeden of Secure World Foundation agreed, but warned about the possibility of some fragments getting boosted to higher orbits.
Still created a debris cloud, but most of it didn't last long.
Anti-satellite missile tests, especially ones involving kinetic kill vehicles as in this case, contribute to the formation of orbital space debris which can remain in orbit for many years and could interfere with future space activity (Kessler syndrome).[28] The 2007 Chinese ASAT test created the largest field of space debris in history, with more than 3,000 pieces of trackable size (golf ball size and larger) officially catalogued in the immediate aftermath, and an estimated 150,000 debris particles.[29][30][31] As of October 2016, a total of 3,438 pieces of debris had been detected, with 571 decayed and 2,867 still in orbit nine years after the incident.[32]
More than half of the tracked debris orbits the Earth with a mean altitude above 850 kilometres (530 mi), so they would likely remain in orbit for decades or centuries.[33] Based on 2009 and 2013 calculations of solar flux, the NASA Orbital Debris Program Office estimated that around 30% of the larger-than-10-centimeter (3.9 in) debris would still be in orbit in 2035.[34]
6
Diplomjodler - 1mon
SpaceX have always been very careful to properly deorbit their used stages. Also, their satellites are in a very low orbit and designed to burn up after the end of their service life. The Chinese on the other hand regularly drop first stages on their own population. The later stages either stay in orbit or come down in an uncontrolled manner. The Chinese space program has overall been very careless about space debris so far. Plus they conducted an anti-satellite test that created a lot of debris that is still up there. They definitely need to be more diligent on these matters.
11
burble @lemmy.dbzer0.com - 1mon
Good thing they have a spare Shenzhou on standby. 6 people stuck in a station designed for 3 would get old fast.
I wonder if they'll have to do an EVA for an inspection.
zabadoh in space
Three Chinese astronauts stranded in space after debris hits their return capsule
https://www.livescience.com/space/space-exploration/three-chinese-astronauts-stranded-in-space-after-debris-hits-their-return-capsuleSo lucky they are on a space station
For a second I thought the capsule was stricken while transiting for reentry, which would be very scary.
Same here
Let's hope that makes the Chinese rethink their attitude towards space debris.
Agreed. This graph is a few years outdated by now, but:
https://lemmy.dbzer0.com/pictrs/image/5b039426-abcf-4627-ae24-de3b341c91ad.webp
The Chinese Guowang constellation with satellites at 1100 km could be a problem if anything fails or collides.
The big spike labeled FY-1C is from a Chinese ASAT operation.
I feel like the country letting Musk blast space full of shit might also want to have a look
My understanding is starlink won't contribute to the kessler syndrome because they are in low Earth orbit. They routinely fall back down to Earth so they don't contribute to much space junk
There are other potential issues with that, though. Just not space junk
And it's not like they couldn't have done the anti-satellite test on something that was about to re-enter. India did that a while back.
https://en.wikipedia.org/wiki/Mission_Shakti
Still created a debris cloud, but most of it didn't last long.
https://en.wikipedia.org/wiki/2007_Chinese_anti-satellite_missile_test
SpaceX have always been very careful to properly deorbit their used stages. Also, their satellites are in a very low orbit and designed to burn up after the end of their service life. The Chinese on the other hand regularly drop first stages on their own population. The later stages either stay in orbit or come down in an uncontrolled manner. The Chinese space program has overall been very careless about space debris so far. Plus they conducted an anti-satellite test that created a lot of debris that is still up there. They definitely need to be more diligent on these matters.
Good thing they have a spare Shenzhou on standby. 6 people stuck in a station designed for 3 would get old fast.
I wonder if they'll have to do an EVA for an inspection.